Simulating performance of microchannel plate photomultipliers in magnetic fields

IF 1.5 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment Pub Date : 2024-11-07 DOI:10.1016/j.nima.2024.170038

E.J. Baldwin, J.S. Lapington, S.A. Leach

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Abstract

Photon counting detectors are utilised for applications in medical imaging, nuclear and particle physics where a strong magnetic field may be present, requiring a detector that can operate in these circumstances. We illustrate how a PMT can be simulated using a model generated using Computer Simulation Technology (CST) Studio Suite software. The model consists of a photocathode, an MCP structure including electrodes, resistive and secondary electron emitting dynode surfaces, and a readout anode, with appropriate potentials applied to the components of the model. Magnetic fields can be applied to the model with different directions and amplitudes. Using this simulation it is possible to produce the gain and timing characteristics of the PMT. We present simulation results from the modelled PMT, demonstrating electron multiplication performance and timing performance as a function of external magnetic field strength and direction.

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模拟微通道板光电倍增管在磁场中的性能

光子计数探测器主要应用于医疗成像、核物理和粒子物理等领域，这些领域可能存在强磁场，因此要求探测器能够在这些情况下工作。我们使用计算机仿真技术 (CST) Studio Suite 软件生成的模型来说明如何模拟 PMT。该模型由一个光电阴极、一个 MCP 结构（包括电极、电阻和二次电子发射阳极表面）和一个读出阳极组成，并对模型的各个组件施加适当的电势。模型上可施加不同方向和振幅的磁场。通过这种模拟，可以得到 PMT 的增益和定时特性。我们展示了建模 PMT 的模拟结果，显示了电子倍增性能和定时性能与外部磁场强度和方向的函数关系。

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来源期刊

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment 物理-光谱学

CiteScore

3.20

自引率

21.40%

发文量

787

审稿时长

1 months

期刊介绍： Section A of Nuclear Instruments and Methods in Physics Research publishes papers on design, manufacturing and performance of scientific instruments with an emphasis on large scale facilities. This includes the development of particle accelerators, ion sources, beam transport systems and target arrangements as well as the use of secondary phenomena such as synchrotron radiation and free electron lasers. It also includes all types of instrumentation for the detection and spectrometry of radiations from high energy processes and nuclear decays, as well as instrumentation for experiments at nuclear reactors. Specialized electronics for nuclear and other types of spectrometry as well as computerization of measurements and control systems in this area also find their place in the A section. Theoretical as well as experimental papers are accepted.

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